Electrical System; Check The Direction Of Rotation; Operation In Explosion Hazard Areas - Wilo -Rexa PRO V06DA-110/EAD1X2-T0015-540-O Einbau- Und Betriebsanleitung

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allowed in the work area during switching on and/or
during operation.
• A second person must be present when working in
shafts. Adequate ventilation must be ensured if there is
danger of poisonous gases forming.

6.1 Electrical system

The product is connected and the power supply cables
installed in terms of the "Installation" chapter as well as
the VDE guidelines and the applicable national regula-
tions.
The product is protected and grounded properly.
Pay attention to the direction of rotation. If the direc-
tion of rotation is incorrect, the unit will not perform as
specified and can sustain damage.
All monitoring devices are connected and have been
checked to ensure that they work properly.
Beware of electrical current!
Electrical current can cause fatal injuries if not
handled correctly! All products with free cable
ends (i.e. without plugs) must be connected by a
qualified electrician.

6.2 Check the direction of rotation

The product is checked and adjusted in the factory to
ensure that the direction of rotation is incorrect. The
connection must be made according to the wiring code
information.
Before submerging, the product must be checked to
ensure that the rotation direction is correct.
A test run should only be performed under gen-
eral operating conditions. Switching on a unit that
has not been submerged is strictly forbidden!
6.2.1 Checking the rotation direction
The rotation direction must be checked with a rotating
field tester by a local electrician. For the correct rota-
tion direction, a clockwise rotating field must be avail-
able.
The product is not approved for operation with a
counter-clockwise rotating field.
6.2.2 If the direction of rotation is not correct
When using Wilo switching devices
Wilo switching devices are designed so that the con-
nected products are driven in the right direction. If the
rotation direction is wrong, 2 phases/leads of the mains
supply to the switching device must be replaced.
With switching devices provided by the customer:
If the rotation direction is wrong, with direct start
motors, 2 phases must be swapped. In the case of
star-delta start-up motors, the connections of two
windings must be swapped e.g. U1 with V1 and U2 with
V2.
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6.3 Adjusting the level-control device
For correct adjustment, please see the installation and
operation manual for the level control device.
Please observe the information on the minimum
water coverage of the product!

6.4 Operation in explosion hazard areas

The operator is responsible for defining the explosion
hazard area. Only products with ex-approval may be
used within an explosion hazard area. Attached switch-
ing devices and plugs must be checked for use in
explosion hazard areas.
Products that are ex-approved are labeled on the type
plate as follows:
• Ex symbol: or FM
APPROVED
• Ex-classification, e.g. Ex d IIB T4
• Ex-certification number, e.g. ATEX1038X
Risk of fatal injury due to explosion!
Products without ex-labeling are not ex-
approved and may not be used in explosion haz-
ard areas! All accessories (incl. attached switch-
ing device/plugs) must be approved for use in
explosion hazard areas!
To keep dry motors sufficiently cooled when they
are not submerged, they must be flooded com-
pletely before being switched back on!
6.5 Startup
Minor oil leakage in the mechanical shaft seal on deliv-
ery is no cause for concern. However, it must be
removed prior to submersion in the pumped liquid.
Keep out of the work area of the unit. No per-
sons are allowed in the work area during switch-
ing on and/or during operation.
Before switching on for the first time, the installation
must be checked as described in the "Installation"
chapter and an isolation check must be carried out
according to the "Maintenance" chapter.
Beware of serious injuries.
In portable installations, the unit can fall over
when it is switched on or during operation. Make
sure that the unit is positioned on a firm founda-
tion and that the pump pedestal is mounted cor-
rectly.
If the unit falls over, it must be switched off before
setting it up again.
In the case of versions with CEE plugs, note the IP pro-
tection class of the plug.
6.5.1 Before switching on
Check the following:
• Cable guidance – no loops, slightly taut
• Check the temperature of the pumped liquid and the
submersion depth – see technical data
• If a hose is used on the discharge side, it should be
flushed out with clean water before use to prevent any
sediment causing blockages
• Clean coarse deposits from the pump sump
WILO SE 10/2011 V4.1WE